Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Principal transactions and other income	$ (2,406)	$ 414
Total revenues	17,770	11,140
Operating expenses
Compensation and benefits	14,134	6,364
Business development, occupancy, equipment	756	811
Subscriptions, clearing, and execution	2,580	2,273
Professional fee and other operating	1,782	1,679
Depreciation and amortization	80	81
Impairment of goodwill	7,883
Total operating expenses	27,215	11,208
Operating income (loss)	(9,445)	(68)
Non-operating income (expense)
Interest expense, net	(2,605)	(1,854)
Income (loss) from equity method affiliates	(107)	(8)
Income (loss) before income tax expense (benefit)	(12,157)	(1,930)
Income tax expense (benefit)	(372)	(106)
Net income (loss)	(11,785)	(1,824)
Less: Net income (loss) attributable to the non-controlling interest	(8,683)	(622)
Net income (loss) attributable to Cohen & Company Inc.	$ (3,102)	$ (1,202)
Income (loss) per common share-basic:
Basic income (loss) per common share	$ (2.70)	$ (1.06)
Weighted average shares outstanding-basic	1,146,879	1,133,166
Income (loss) per common share-diluted:
Diluted income (loss) per common share	$ (2.70)	$ (1.06)
Weighted average shares outstanding-diluted	3,940,677	1,665,575
Dividends declared per common share		$ 0.20
Comprehensive income (loss)
Net income (loss)	$ (11,785)	$ (1,824)
Other comprehensive income (loss) item:
Foreign currency translation adjustments, net of tax of $0	(100)	9
Other comprehensive income (loss), net of tax of $0	(100)	9
Comprehensive income (loss)	(11,885)	(1,815)
Less: comprehensive income (loss) attributable to the non-controlling interest	(8,754)	(619)
Comprehensive income (loss) attributable to Cohen & Company Inc.	(3,131)	(1,196)
Net Trading [Member]
Revenues
Total revenue	18,561	8,724
Asset Management [Member]
Revenues
Total revenue	$ 1,615	$ 2,002